Echo JS 0.11.0

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Off topic... and low-key spammish.

Please stop begging for GitHub stars.

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Off topic.

Off topic.

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Already posted.

A note to add: Array.from supports a secondary mapping function argument. Which means that instead of

Array.from(set).map(c => c.toUpperCase());

you can do

Array.from(set, c => c.toUpperCase());